In order to improve the oil and gas development recovery rate,surfactants are usually used.However,due to the inability of a single surfactant to achieve ultra-low interfacial tension (IFT) and strong hydrophilic conditions,the oil and gas recovery rate of traditional surfactant flooding is affected.To address these issues,improving oil recovery through surfactant mixtures is a feasible solution.In this paper,the potential of new composite surfactants as a means to improve oil recovery was investigated.The results showed that compared to individual surfactant solutions,composite surfactants had a more significant impact on changes in oil-water interfacial tension and wettability.The use of composite surfactant systems could achieve ultra-low surface tension (about 0.006 mN·m-1),therefore the research suggested that this new type of composite surfactant was effective and could be used for oilfield development.
关键词
复合表面活性剂/油气开发采收率/甘油/鼠李糖脂/油水表面张力/润湿性
Key words
Composite surfactant/Oil and gas development recovery rate/Glycerol/Rhammnolipids/Oil water interfacial tension/Wettability
维普
万方数据